Пример #1
0
        static async Task <int> MainAsync()
        {
            Console.WriteLine($"{DateTime.Now.ToLocalTime()}>\t The PumpSimulator Main() has started.");
            SetupTelemetry();

            try
            {
                RetrieveSettingsFromConfig();

                var simulatorParameters = SimulatorParameters.Create();
                (CancellationTokenSource cts, ManualResetEventSlim completed, Option <object> handler) = ShutdownHandler.Init(TimeSpan.FromSeconds(5), null);

                Console.WriteLine(
                    $"Initializing simulated sensor to send {(SendUnlimitedMessages(messageCount) ? "unlimited" : messageCount.ToString())} "
                    + $"messages, at an interval of {messageDelay.TotalSeconds} seconds.\n"
                    + $"To change this, set the environment variable {MessageCountConfigKey} to the number of messages that should be sent (set it to -1 to send unlimited messages).");

                moduleClient = await ModuleUtil.CreateModuleClientAsync(
                    protocol,
                    ModuleUtil.DefaultTimeoutErrorDetectionStrategy,
                    ModuleUtil.DefaultTransientRetryStrategy);

                ModuleClient userContext = moduleClient;
                reportedProperties = new TwinCollection();

                await moduleClient.SetDesiredPropertyUpdateCallbackAsync(OnDesiredPropertiesUpdated, userContext);

                await moduleClient.SetMethodHandlerAsync("reset", ResetMethod, null);

                await moduleClient.SetMethodHandlerAsync("ping", PingMethod, null);

                await moduleClient.SetMethodHandlerAsync("check", CheckMethod, null);

                await moduleClient.SetInputMessageHandlerAsync("control", ControlMessageHandle, userContext);

                await RetrieveSettingsFromTwin(moduleClient);
                await SendEvents(moduleClient, messageCount, simulatorParameters, cts);

                await cts.Token.WhenCanceled();

                completed.Set();
                handler.ForEach(h => GC.KeepAlive(h));
                Console.WriteLine("SimulatedTemperatureSensor Main() finished.");
                return(0);
            }
            catch (System.Exception ex)
            {
                Console.WriteLine($"{DateTime.Now.ToLocalTime()}>\t PumpSimulator Main() error.");
                Console.WriteLine(ex.Message);
                var telemetry = new ExceptionTelemetry(ex);
                telemetryClient.TrackException(telemetry);
                return(-1);
            }
        }
Пример #2
0
        /// <summary>
        /// Module behavior:
        ///        Sends data periodically (with default frequency of 5 seconds).
        ///        Data trend:
        ///         - Temperature regularly rises from 21C to 100C in regularly with jitter
        ///         - Pressure correlates with Temperature 1 to 10psi
        ///         - Suction Pressure stable around 5psi
        ///         - Discharge Pressure stable around 5psi
        ///         - Ambient temperature stable around 21C
        ///         - Flow is stable with tiny jitter around 25%
        ///                Method for resetting the data stream
        /// </summary>
        static async Task SendEvents(
            ModuleClient moduleClient,
            int messageCount,
            SimulatorParameters sim,
            CancellationTokenSource cts)
        {
            int    count       = 1;
            double currentTemp = sim.TempMin;
            double normal      = (sim.PressureMax - sim.PressureMin) / (sim.TempMax - sim.TempMin);

            while (!cts.Token.IsCancellationRequested && (SendUnlimitedMessages(messageCount) || messageCount >= count))
            {
                if (Reset)
                {
                    currentTemp = sim.TempMin;
                    Reset.Set(false);
                }

                if (currentTemp > sim.TempMax)
                {
                    currentTemp += Rnd.NextDouble() - 0.5; // add value between [-0.5..0.5]
                }
                else
                {
                    currentTemp += -0.25 + (Rnd.NextDouble() * 1.5); // add value between [-0.25..1.25] - average +0.5
                }

                if (sendData)
                {
                    var events   = new List <MessageEvent>();
                    var deviceId = Environment.MachineName + "-" + Environment.GetEnvironmentVariable("DEVICE");

                    // Add Desired Number of Events into the Message
                    for (int i = 0; i < eventCount; i++)
                    {
                        events.Add(new MessageEvent
                        {
                            DeviceId    = deviceId + "-" + i,
                            TimeStamp   = DateTime.UtcNow,
                            Temperature = new SensorReading
                            {
                                Value  = currentTemp,
                                Units  = "degC",
                                Status = 200
                            },
                            Pressure = new SensorReading
                            {
                                Value  = sim.PressureMin + ((currentTemp - sim.TempMin) * normal),
                                Units  = "psig",
                                Status = 200
                            },
                            SuctionPressure = new SensorReading
                            {
                                Value  = sim.PressureMin + 4 + ((currentTemp - sim.TempMin) * normal),
                                Units  = "psig",
                                Status = 200
                            },
                            DischargePressure = new SensorReading
                            {
                                Value  = sim.PressureMin + 1 + ((currentTemp - sim.TempMin) * normal),
                                Units  = "psig",
                                Status = 200
                            },
                            Flow = new SensorReading
                            {
                                Value  = Rnd.Next(78, 82),
                                Units  = "perc",
                                Status = 200
                            }
                        });
                        currentTemp += -0.25 + (Rnd.NextDouble() * 1.5);
                    }

                    var msgBody = new MessageBody
                    {
                        Asset  = Environment.GetEnvironmentVariable("ASSET") ?? "whidbey",
                        Source = Environment.MachineName,
                        Events = events
                    };

                    string dataBuffer   = JsonConvert.SerializeObject(msgBody);
                    var    eventMessage = new Message(Encoding.UTF8.GetBytes(dataBuffer));
                    eventMessage.Properties.Add("sequenceNumber", count.ToString());
                    eventMessage.Properties.Add("batchId", BatchId.ToString());
                    eventMessage.Properties.Add("asset", msgBody.Asset);
                    var size = eventMessage.GetBytes().Length;

                    if (debug)
                    {
                        Console.WriteLine($"\t{DateTime.Now.ToLocalTime()}> Sending message: {count}, Size: {size}, Body: [{dataBuffer}]");
                    }
                    else
                    {
                        Console.WriteLine($"\t{DateTime.Now.ToLocalTime()}> Sending message: {count}, Size: {size}");
                    }

                    try
                    {
                        if (insights)
                        {
                            telemetryClient.GetMetric("SendMessage").TrackValue(1);
                            telemetryClient.Context.Operation.Name = "Special Operation";
                            Metric sizeStats = telemetryClient.GetMetric("Special Operation Message Size");
                            sizeStats.TrackValue(size);
                        }
                        await moduleClient.SendEventAsync("temperatureOutput", eventMessage);
                    }
                    catch (Microsoft.Azure.Devices.Client.Exceptions.MessageTooLargeException exception)
                    {
                        Console.WriteLine(exception.Message);
                        if (insights)
                        {
                            telemetryClient.GetMetric("MessageSizeExceeded").TrackValue(1);
                        }
                    }
                    count++;
                }

                await Task.Delay(messageDelay, cts.Token);
            }

            if (messageCount < count)
            {
                Console.WriteLine($"Done sending {messageCount} messages");
            }
        }